Other CAS Products

CAS Client Services

CAS Client Services is a fee-based service that offers you several options for confirming and assigning CAS Registry Numbers (often referred to as CAS RNs or CAS Numbers) and obtaining CA Index Names.

International CODEN Service

The International CODEN Service serves the library and information service community. CODEN are unique, six-character codes that identify serial and nonserial publications produced worldwide. CODEN are assigned not only to chemistry-related literature but to publications in all subject areas. Upon request, we can assign CODEN to serial publications or retrieve and provide CODEN previously assigned to publications. For additional information, contact:

Free CAS Web-based Products

The CAS Source Index (CASSI) Search Tool is an online resource intended to support researchers and librarians who need accurate bibliographic information. Use this free tool to quickly identify or confirm journal titles and abbreviations for publications indexed by CAS since 1907, including serial and non-serial scientific and technical publications. Locate the bibliographic details you need quickly and easily. Search by Title, Abbreviation, CODEN, ISBN, or ISSN.